05/23/25

What We’re Learning From The James Webb Space Telescope

A pair of interacting galaxies. The larger of the two galaxies is slightly right of center, and composed of a hazy, bright, white center and a ring of gaseous filaments, which are different shades of red and orange. Toward the bottom left and bottom right of the ring are filaments of gas spiraling inward toward the core. At the top left of the ring is a noticeable gap, bordered by two large, orange pockets of dust and gas. The smaller galaxy to its left is made of hazy white gas and dust, which becomes more diffuse farther away from its center. To this galaxy’s bottom left, there is a smaller, more diffuse gas cloud that wafts outward toward the edges. Many red, orange, and white background galaxies are spread throughout, with some hazier in composition and others having more defined spiral patterns.
A pair of interacting galaxies, captured by the James Webb Space Telescope. Credit: NASA, ESA, CSA, STScI

The James Webb Space Telescope (JWST) started collecting data nearly three years ago, and it has already transformed our understanding of the universe. It has spotted the earliest galaxies ever seen, and, closer to home, captured auroras around Jupiter. So what’s the latest from the JWST? In this live broadcast, Hosts Flora Lichtman and Ira Flatow talk with astrophysicist Macarena Garcia Marin, deputy project director for the James Webb Space Telescope.

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Segment Guests

Macarena Garcia Marin

Dr. Macarena Garcia Marin is an astrophysicist and instrument scientist for the European Space Agency. She’s also deputy project director for the James Webb Space Telescope.

Segment Transcript

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Meet the Producers and Host

About Annette Heist

Annette Heist is a former senior producer for Science Friday.

About Flora Lichtman

Flora Lichtman is a host of Science Friday. In a previous life, she lived on a research ship where apertivi were served on the top deck, hoisted there via pulley by the ship’s chef.

About Ira Flatow

Ira Flatow is the founder and host of Science FridayHis green thumb has revived many an office plant at death’s door.

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